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-rw-r--r--arch/blackfin/Kconfig2
-rw-r--r--arch/blackfin/mach-common/entry.S17
-rw-r--r--arch/blackfin/mm/init.c14
3 files changed, 13 insertions, 20 deletions
diff --git a/arch/blackfin/Kconfig b/arch/blackfin/Kconfig
index 6b97aa811e2b..672b7b056c8e 100644
--- a/arch/blackfin/Kconfig
+++ b/arch/blackfin/Kconfig
@@ -808,7 +808,7 @@ config APP_STACK_L1
808config EXCEPTION_L1_SCRATCH 808config EXCEPTION_L1_SCRATCH
809 bool "Locate exception stack in L1 Scratch Memory" 809 bool "Locate exception stack in L1 Scratch Memory"
810 default n 810 default n
811 depends on !APP_STACK_L1 && !SYSCALL_TAB_L1 811 depends on !APP_STACK_L1
812 help 812 help
813 Whenever an exception occurs, use the L1 Scratch memory for 813 Whenever an exception occurs, use the L1 Scratch memory for
814 stack storage. You cannot place the stacks of FLAT binaries 814 stack storage. You cannot place the stacks of FLAT binaries
diff --git a/arch/blackfin/mach-common/entry.S b/arch/blackfin/mach-common/entry.S
index a063a434f7e3..f0636fdcb353 100644
--- a/arch/blackfin/mach-common/entry.S
+++ b/arch/blackfin/mach-common/entry.S
@@ -36,7 +36,6 @@
36#include <linux/init.h> 36#include <linux/init.h>
37#include <linux/linkage.h> 37#include <linux/linkage.h>
38#include <linux/unistd.h> 38#include <linux/unistd.h>
39#include <linux/threads.h>
40#include <asm/blackfin.h> 39#include <asm/blackfin.h>
41#include <asm/errno.h> 40#include <asm/errno.h>
42#include <asm/fixed_code.h> 41#include <asm/fixed_code.h>
@@ -1588,19 +1587,3 @@ ENTRY(_sys_call_table)
1588 .long _sys_ni_syscall 1587 .long _sys_ni_syscall
1589 .endr 1588 .endr
1590END(_sys_call_table) 1589END(_sys_call_table)
1591
1592#ifdef CONFIG_EXCEPTION_L1_SCRATCH
1593/* .section .l1.bss.scratch */
1594.set _exception_stack_top, L1_SCRATCH_START + L1_SCRATCH_LENGTH
1595#else
1596#ifdef CONFIG_SYSCALL_TAB_L1
1597.section .l1.bss
1598#else
1599.bss
1600#endif
1601ENTRY(_exception_stack)
1602 .rept 1024 * NR_CPUS
1603 .long 0
1604 .endr
1605_exception_stack_top:
1606#endif
diff --git a/arch/blackfin/mm/init.c b/arch/blackfin/mm/init.c
index 9c3629b9a689..00543c813f4a 100644
--- a/arch/blackfin/mm/init.c
+++ b/arch/blackfin/mm/init.c
@@ -52,9 +52,14 @@ static unsigned long empty_bad_page_table;
52 52
53static unsigned long empty_bad_page; 53static unsigned long empty_bad_page;
54 54
55unsigned long empty_zero_page; 55static unsigned long empty_zero_page;
56 56
57extern unsigned long exception_stack[NR_CPUS][1024]; 57#ifndef CONFIG_EXCEPTION_L1_SCRATCH
58#if defined CONFIG_SYSCALL_TAB_L1
59__attribute__((l1_data))
60#endif
61static unsigned long exception_stack[NR_CPUS][1024];
62#endif
58 63
59struct blackfin_pda cpu_pda[NR_CPUS]; 64struct blackfin_pda cpu_pda[NR_CPUS];
60EXPORT_SYMBOL(cpu_pda); 65EXPORT_SYMBOL(cpu_pda);
@@ -117,7 +122,12 @@ asmlinkage void __init init_pda(void)
117 cpu_pda[0].next = &cpu_pda[1]; 122 cpu_pda[0].next = &cpu_pda[1];
118 cpu_pda[1].next = &cpu_pda[0]; 123 cpu_pda[1].next = &cpu_pda[0];
119 124
125#ifdef CONFIG_EXCEPTION_L1_SCRATCH
126 cpu_pda[cpu].ex_stack = (unsigned long *)(L1_SCRATCH_START + \
127 L1_SCRATCH_LENGTH);
128#else
120 cpu_pda[cpu].ex_stack = exception_stack[cpu + 1]; 129 cpu_pda[cpu].ex_stack = exception_stack[cpu + 1];
130#endif
121 131
122#ifdef CONFIG_SMP 132#ifdef CONFIG_SMP
123 cpu_pda[cpu].imask = 0x1f; 133 cpu_pda[cpu].imask = 0x1f;